Negative $c$-axis longitudinal magnetoresistance in FeSe

M. Lourdes Amigó; Jorge I. Facio; Gladys Nieva

Negative $c$-axis longitudinal magnetoresistance in FeSe

Superconductivity 2024-12-04 v1 Strongly Correlated Electrons

Authors: M. Lourdes Amigó , Jorge I. Facio , Gladys Nieva

Abstract

Below the structural transition occurring at $T_s=90$ \,K, FeSe exhibits positive transverse magnetoresistance when the current is applied parallel to the $ab$ -plane. In this study, we show that, in contrast, when both the magnetic field and the current are aligned along the $c$ -axis, the magnetotransport changes significantly. In this configuration, FeSe develops a sizable negative longitudinal magnetoresistance ( $\sim$ 15\% at $T$ =10\,K and $\mu_0H$ =16\,T) in the nematic phase. We attribute this finding to the effect of the applied magnetic field on the scattering from spin fluctuations. Our observations reflect the intricate interplay between spin and orbital degrees of freedom in the nematic phase of FeSe.

Keywords

magnetoresistance FeSe nematic phase spin fluctuations c-axis

Cite

@article{arxiv.2412.02677,
  title  = {Negative $c$-axis longitudinal magnetoresistance in FeSe},
  author = {M. Lourdes Amigó and Jorge I. Facio and Gladys Nieva},
  journal= {arXiv preprint arXiv:2412.02677},
  year   = {2024}
}

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To appear in PRB

Negative $c$-axis longitudinal magnetoresistance in FeSe

Abstract

Keywords

Cite

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